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![Walter Lozano](/assets/img/avatar_default.png)
When using OF_PLATDATA, the bind process between devices and drivers is performed trying to match compatible string with driver names. However driver names are not strictly defined, and also there are different names used when declaring a driver with U_BOOT_DRIVER, the name of the symbol used in the linker list and the used in the struct driver_info. In order to make things a bit more clear, rename the drivers names. This will also help for further OF_PLATDATA improvements, such as checking for valid driver names. Signed-off-by: Walter Lozano <walter.lozano@collabora.com> Reviewed-by: Simon Glass <sjg@chromium.org> Add a fix for sandbox of-platdata to avoid using an invalid ANSI colour: Signed-off-by: Simon Glass <sjg@chromium.org>
155 lines
3.3 KiB
C
155 lines
3.3 KiB
C
/*
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* Simulate a SPI port
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*
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* Copyright (c) 2011-2013 The Chromium OS Authors.
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* Licensed under the GPL-2 or later.
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*/
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#define LOG_CATEGORY UCLASS_SPI
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <malloc.h>
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#include <spi.h>
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#include <spi_flash.h>
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#include <os.h>
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#include <linux/errno.h>
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#include <asm/spi.h>
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#include <asm/state.h>
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#include <dm/device-internal.h>
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#ifndef CONFIG_SPI_IDLE_VAL
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# define CONFIG_SPI_IDLE_VAL 0xFF
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#endif
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const char *sandbox_spi_parse_spec(const char *arg, unsigned long *bus,
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unsigned long *cs)
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{
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char *endp;
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*bus = simple_strtoul(arg, &endp, 0);
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if (*endp != ':' || *bus >= CONFIG_SANDBOX_SPI_MAX_BUS)
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return NULL;
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*cs = simple_strtoul(endp + 1, &endp, 0);
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if (*endp != ':' || *cs >= CONFIG_SANDBOX_SPI_MAX_CS)
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return NULL;
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return endp + 1;
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}
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__weak int sandbox_spi_get_emul(struct sandbox_state *state,
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struct udevice *bus, struct udevice *slave,
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struct udevice **emulp)
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{
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return -ENOENT;
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}
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static int sandbox_spi_xfer(struct udevice *slave, unsigned int bitlen,
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const void *dout, void *din, unsigned long flags)
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{
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struct udevice *bus = slave->parent;
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struct sandbox_state *state = state_get_current();
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struct dm_spi_emul_ops *ops;
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struct udevice *emul;
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uint bytes = bitlen / 8, i;
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int ret;
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uint busnum, cs;
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if (bitlen == 0)
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return 0;
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/* we can only do 8 bit transfers */
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if (bitlen % 8) {
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printf("sandbox_spi: xfer: invalid bitlen size %u; needs to be 8bit\n",
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bitlen);
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return -EINVAL;
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}
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busnum = bus->seq;
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cs = spi_chip_select(slave);
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if (busnum >= CONFIG_SANDBOX_SPI_MAX_BUS ||
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cs >= CONFIG_SANDBOX_SPI_MAX_CS) {
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printf("%s: busnum=%u, cs=%u: out of range\n", __func__,
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busnum, cs);
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return -ENOENT;
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}
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ret = sandbox_spi_get_emul(state, bus, slave, &emul);
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if (ret) {
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printf("%s: busnum=%u, cs=%u: no emulation available (err=%d)\n",
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__func__, busnum, cs, ret);
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return -ENOENT;
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}
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ret = device_probe(emul);
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if (ret)
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return ret;
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ops = spi_emul_get_ops(emul);
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ret = ops->xfer(emul, bitlen, dout, din, flags);
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log_content("sandbox_spi: xfer: got back %i (that's %s)\n rx:",
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ret, ret ? "bad" : "good");
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if (din) {
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for (i = 0; i < bytes; ++i)
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log_content(" %u:%02x", i, ((u8 *)din)[i]);
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}
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log_content("\n");
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return ret;
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}
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static int sandbox_spi_set_speed(struct udevice *bus, uint speed)
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{
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return 0;
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}
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static int sandbox_spi_set_mode(struct udevice *bus, uint mode)
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{
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return 0;
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}
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static int sandbox_cs_info(struct udevice *bus, uint cs,
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struct spi_cs_info *info)
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{
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/* Always allow activity on CS 0 */
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if (cs >= 1)
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return -EINVAL;
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return 0;
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}
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static int sandbox_spi_get_mmap(struct udevice *dev, ulong *map_basep,
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uint *map_sizep, uint *offsetp)
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{
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*map_basep = 0x1000;
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*map_sizep = 0x2000;
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*offsetp = 0x100;
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return 0;
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}
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static const struct dm_spi_ops sandbox_spi_ops = {
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.xfer = sandbox_spi_xfer,
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.set_speed = sandbox_spi_set_speed,
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.set_mode = sandbox_spi_set_mode,
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.cs_info = sandbox_cs_info,
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.get_mmap = sandbox_spi_get_mmap,
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};
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static const struct udevice_id sandbox_spi_ids[] = {
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{ .compatible = "sandbox,spi" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_spi) = {
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.name = "sandbox_spi",
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.id = UCLASS_SPI,
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.of_match = sandbox_spi_ids,
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.ops = &sandbox_spi_ops,
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};
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